Fatal Error SDE406: Authentication module load failure

  • Article ID: 109201
  • Updated: 28 May 2009

Sophos SafeGuard Disk Encryption 4.60

Client OS

Windows 2000 Professional SP4, Windows XP SP3

Server OS



What can be done to solve this error?


This is a known behaviour. You can try to downgrade to your old BIOS version or make a kernel restore. The error occured possibly because you have updated your BIOS and the new BIOS version uses a different harddrive controller mechanism.

keywords: 406 sde Sophos SafeGuard Disk Encryption

If you need more information or guidance, then please contact technical support.

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